1222100013212 has 24 divisors (see below), whose sum is σ = 2303326084416. Its totient is φ = 564012462528.

The previous prime is 1222100013203. The next prime is 1222100013229. The reversal of 1222100013212 is 2123100012221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187478 + ... + 1574594.

It is an arithmetic number, because the mean of its divisors is an integer number (95971920184).

Almost surely, 2^{1222100013212} is an apocalyptic number.

It is an amenable number.

1222100013212 is a deficient number, since it is larger than the sum of its proper divisors (1081226071204).

1222100013212 is a wasteful number, since it uses less digits than its factorization.

1222100013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404077 (or 1404075 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1222100013212 its reverse (2123100012221), we get a palindrome (3345200025433).

Subtracting 1222100013212 from its reverse (2123100012221), we obtain a palindrome (900999999009).

The spelling of 1222100013212 in words is "one trillion, two hundred twenty-two billion, one hundred million, thirteen thousand, two hundred twelve".